/*
 * Galaxium Messenger
 * 
 * Copyright (C) 2007 Ben Motmans <ben.motmans@gmail.com>
 * 
 * License: GNU General Public License (GPL)
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

using System;
using System.Collections.Generic;

using Gtk;
using Gdk;
using Pango;

using Galaxium.Protocol;
using Galaxium.Core;
using Galaxium.Gui;
using Galaxium.Gui.GtkGui;

namespace Galaxium.Protocol.Aim.GtkGui
{
	public sealed class ContactTreeFilter : ITreeNodeFilter
	{
		public bool Filter (TreeNodeContext context)
		{
			if (context.NodeObject is AimContact)
			{
				AimContact contact = context.NodeObject as AimContact;
				
				if (contact.Session.Account.ShowOfflineContacts)
					return true;
				else
					return contact.Presence.BasePresence != BasePresence.Offline;
			}
			
			if (context.NodeObject is AimGroup)
			{
				AimGroup group = context.NodeObject as AimGroup;
				
				if (group.Session.Account.ShowEmptyGroups)
					return true;
				else if (group.OfflineCount > 0 && group.Session.Account.ShowOfflineContacts)
					return true;
				else
					return group.OnlineCount > 0;
			}
			
			return true;
		}
	}
}